First Report: Senna multijuga Subsp. multijuga (Fabales: Fabaceae) as an Attractant and Bioinsecticide for Oryctes rhinoceros (Coleoptera: Scarabaeidae)

Ruli Wandri (), Samsu Alam, Shervinia Dwi Ayundra, Azharudin Apriansa, Dwi Asmono, Subeki Subeki, Yuyun Fitriana (), Rosma Hasibuan and Radix Suharjo
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Ruli Wandri: Division of Sustainability, Research and Development, PT Sampoerna Agro Tbk, Jakarta 12930, Indonesia
Samsu Alam: Division of Sustainability, Research and Development, PT Sampoerna Agro Tbk, Jakarta 12930, Indonesia
Shervinia Dwi Ayundra: Division of Sustainability, Research and Development, PT Sampoerna Agro Tbk, Jakarta 12930, Indonesia
Azharudin Apriansa: Division of Sustainability, Research and Development, PT Sampoerna Agro Tbk, Jakarta 12930, Indonesia
Dwi Asmono: Division of Sustainability, Research and Development, PT Sampoerna Agro Tbk, Jakarta 12930, Indonesia
Subeki Subeki: Department of Agricultural Product, Faculty of Agriculture, University of Lampung, Lampung 35145, Indonesia
Yuyun Fitriana: Department of Plant Protection, Faculty of Agriculture, University of Lampung, Lampung 35145, Indonesia
Rosma Hasibuan: Department of Plant Protection, Faculty of Agriculture, University of Lampung, Lampung 35145, Indonesia
Radix Suharjo: Department of Plant Protection, Faculty of Agriculture, University of Lampung, Lampung 35145, Indonesia

Agriculture, 2024, vol. 14, issue 9, 1-16

Abstract: In 2020, a plant displaying promising attributes as both an attractant and bioinsecticide for Oryctes rhinoceros (Coleoptera: Scarabaeidae), known locally as “Hujan Emas”, was discovered at PT Sampoerna Agro Tbk, Indonesia. Despite its potential, the identity of this plant remains unknown. This study aims to reveal the plant’s identity and ascertain its potential as an attractant and bioinsecticide against O. rhinoceros . Identification was performed using morphological and sequence analyses of the MaturaseK , chloroplast rps16 , and chloroplast rpl16 genes . Field observations were conducted over 9 months, focusing on the number of adult O. rhinoceros visiting the plant and the number captured using synthetic pheromone (ethyl 4-methyloctanoate) traps. Bioinsecticidal activity assessments focused on extracts from the plant’s bark, stem, and leaves. Morphological characterization and sequence analysis conclusively affirmed the plant’s identity as Senna multijuga (Fabales: Fabaceae). The total number of O. rhinoceros specimens obtained from S. multijuga was 1.6 times higher (836 beetles) than that obtained using the pheromone trap (512 beetles), suggesting that S. multijuga has better attractant capability than ethyl 4-methyloctanoate. The leaf extract exhibited insecticidal activity against larvae, while the stem and bark extracts demonstrated insecticidal activity against both larvae and adults. Larval mortality ranged from 1.25% to 3.75%, while adult mortality was notably higher, ranging from 12.5% to 25%. This is the first report on the capability of S. multijuga as an attractant and bioinsecticide against O. rhinoceros .

Keywords: insecticidal; morphological identification; plant extract; sequence analysis (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2024
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